HSK 6
许可
xǔkě动
to allow; to permit
没有许可不得进入实验室。
Méi yǒu xǔ kě bù dé jìn rù shí yàn shì.
No one may enter the laboratory without permission.
Say it
Hold the button, say it, then let go.
Other HSK words sharing a character
Also free:
New in the HSK 3.0 word list at level 6.